北羌塘盆地中的一种重要褶皱样式——穹窿构造

基金项目:

国家油气专项“青藏高原油气资源战略选区调查与评价”(XQ2004-06)。

详细信息

Domal structures: An important type of folds in northern Qiangtang

Chengdu Institute of Geology and Mineral Resources, Chengdu 610082, Sichuan, China

摘要: 穹窿构造在北羌塘盆地普遍发育,成为该地区一种重要褶皱样式,其形成机制主要是燕山Ⅲ幕近南北向背斜与前期近东西向背斜的复合叠加。作者进一步指出,穹窿构造是北羌塘盆地最重要的圈闭构造,在油气有利地带近东西向大中型背斜中寻找穹窿构造是确定油气勘探靶区的重要途径。
- 北羌塘盆地 /
- 穹窿构造 /
- 油气 /
- 青藏
Abstract: The domal structures are well displayed as an important type of folds in northern Qiangtang Basin,and interpreted to be the products of the superimposition of the nearly NS-trending anticlines created by the nearly EW-trending compressive stress during the phase Ⅲ of the Yanshanian onto the pre-existing nearly EW-trending anticlines.These domal structures are believed to be the most important trap structures in northern Qiangtang Basin.Emphasis in the future exploration will be placed on the domal structures in the nearly EW-trending large- and medium-sized anticlines in order to delineate the targets of oil and gas exploration in the favourable zones.
- northern Qiangtang Basin /
- domal structure /
- oil and gas /
- Qinghai-Xizang Plateau